Home / 1,231,378.21-1,699,285.35-687,522.34

Finding the Fourth Proportional to 1,231,378.21, 1,699,285.35 and 687,522.34

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Solution

The fourth proportional to 1,231,378.21, 1,699,285.35 and 687,522.34 is: 948,771.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,378.21 : 1,699,285.35 = 687,522.34 : x
  2. Step 2: Convert to fraction form
    1,231,378.21/1,699,285.35 = 687,522.34/x
  3. Step 3: Cross multiply
    1,231,378.21x = 1,699,285.35 × 687,522.34
  4. Step 4: Simplify right side
    1,231,378.21x = 1,168,296,640,159.72
  5. Step 5: Solve for x
    x = 1,168,296,640,159.72/1,231,378.21
  6. Step 6: Final answer
    x = 948,771.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.